func runtime.racesync 3 uses runtime (current package) chan.go#L325: racesync(c, sg) chan.go#L706: racesync(c, sg) chan.go#L927: func racesync(c *hchan, sg *sudog) {
The pages are generated with Golds v0.7.6. (GOOS=linux GOARCH=amd64)